The Australian Transaction Reports and Analysis Centre (Austrac), the Australian government agency responsible for countering money laundering and the financing of terrorism, is able to track each conversion transaction from bitcoin into or out of Australian dollars.
Well, I am not sure about the history but looking at moden MATLAB, the question should be which languages, rather than which language! The list I have so far is. 1  C (many built in compiled mex functions are written in C)  C++ (MATLAB makes use of the Boost C++ libraries..thanks to M in the comments for this one)
The command window is also useful if you just want to use MATLAB as a scientific calculator or as a graphing tool. If you write longer programs, you will find it more convenient to write the program code in a separate window, and then run it in the command window (discussed in Intro to programming).